jj97181818/Ch08_MultiActivity
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owo #1

Merged
jj97181818 merged 7 commits from :master into master 2018-12-13 02:42:51 +00:00
Conversation 0 Commits 7 Files Changed 6 +159 -48
6 changed files with 159 additions and 48 deletions
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30
app/src/main/java/me/jj97181818/ch08_multiactivity/MainActivity.java
View File

@ -3,23 +3,51 @@ package me.jj97181818.ch08_multiactivity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
TextView tvPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvPath = findViewById(R.id.tv_path1);
run(getIntent());
}
private void run(Intent intent) {
tvPath.setText(intent.getCharSequenceExtra("path"));
if (tvPath.getText().equals("")) {
tvPath.setText("1");
}
else {
tvPath.setText(tvPath.getText() + " -> 1");
}
}
public void goBack (View v) {
Intent intent = new Intent();
intent.putExtra("path", tvPath.getText());
setResult(RESULT_OK, intent);
finish();
}
public void gotoSecondActivity(View v) {
Intent it = new Intent(this, SecondActivity.class);
startActivity(it);
it.putExtra("path", tvPath.getText());
startActivityForResult(it, 1);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
run(data);
}
}

26
app/src/main/java/me/jj97181818/ch08_multiactivity/SecondActivity.java
View File

@ -1,24 +1,48 @@
package me.jj97181818.ch08_multiactivity;
import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class SecondActivity extends AppCompatActivity {
TextView tvPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
tvPath = findViewById(R.id.tv_path2);
run(getIntent());
}
private void run(Intent intent) {
tvPath.setText(intent.getCharSequenceExtra("path"));
tvPath.setText(tvPath.getText() + " -> 2");
}
public void goBack (View v) {
Intent intent = new Intent();
intent.putExtra("path", tvPath.getText());
setResult(RESULT_OK, intent);
finish();
}
public void gotoThirdActivity(View v) {
Intent it = new Intent(this, ThirdActivity.class);
startActivity(it);
it.putExtra("path", tvPath.getText());
startActivityForResult(it, 2);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
run(data);
}
}

26
app/src/main/java/me/jj97181818/ch08_multiactivity/ThirdActivity.java
View File

@ -1,24 +1,48 @@
package me.jj97181818.ch08_multiactivity;
import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class ThirdActivity extends AppCompatActivity {
TextView tvPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_third);
tvPath = findViewById(R.id.tv_path3);
run(getIntent());
}
private void run(Intent intent) {
tvPath.setText(intent.getCharSequenceExtra("path"));
tvPath.setText(tvPath.getText() + " -> 3");
}
public void goBack (View v) {
Intent intent = new Intent();
intent.putExtra("path", tvPath.getText());
setResult(RESULT_OK, intent);
finish();
}
public void gotoFirstActivity(View v) {
Intent it = new Intent(this, MainActivity.class);
startActivity(it);
it.putExtra("path", tvPath.getText());
startActivityForResult(it, 3);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
run(data);
}
}

52
app/src/main/res/layout/activity_main.xml
View File

@ -6,24 +6,8 @@
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:onClick="gotoSecondActivity"
android:text="開啟活動2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button5"
app:layout_constraintVertical_bias="0.125" />
<TextView
android:id="@+id/textView"
android:id="@+id/tv_name1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
@ -33,17 +17,45 @@
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button5"
<TextView
android:id="@+id/tv_path1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="200dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="TextView"
app:layout_constraintBottom_toTopOf="@+id/btn_back1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tv_name1" />
<Button
android:id="@+id/btn_back1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="164dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:onClick="goBack"
android:text="結束活動1"
app:layout_constraintBottom_toTopOf="@+id/btn_start1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/btn_start1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="164dp"
android:onClick="gotoSecondActivity"
android:text="開啟活動2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
</android.support.constraint.ConstraintLayout>

47
app/src/main/res/layout/activity_second.xml
View File

@ -6,24 +6,8 @@
android:layout_height="match_parent"
tools:context=".SecondActivity">
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:onClick="goBack"
android:text="回到活動1"
app:layout_constraintBottom_toTopOf="@+id/button3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.848" />
<TextView
android:id="@+id/textView2"
android:id="@+id/tv_name2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
@ -33,8 +17,35 @@
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/tv_path2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:text="TextView"
app:layout_constraintBottom_toTopOf="@+id/btn_back2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tv_name2" />
<Button
android:id="@+id/button3"
android:id="@+id/btn_back2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="164dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:onClick="goBack"
android:text="回到活動1"
app:layout_constraintBottom_toTopOf="@+id/btn_start2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/btn_start2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"

26
app/src/main/res/layout/activity_third.xml
View File

@ -7,7 +7,7 @@
tools:context=".ThirdActivity">
<TextView
android:id="@+id/textView3"
android:id="@+id/tv_name3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
@ -17,28 +17,40 @@
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button4"
<TextView
android:id="@+id/tv_path3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="88dp"
android:layout_marginEnd="8dp"
android:text="TextView"
app:layout_constraintBottom_toTopOf="@+id/btn_back3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tv_name3" />
<Button
android:id="@+id/btn_back3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="164dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:onClick="goBack"
android:text="回到活動2"
app:layout_constraintBottom_toTopOf="@+id/button6"
app:layout_constraintBottom_toTopOf="@+id/btn_start3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button6"
android:id="@+id/btn_start3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="163dp"
android:layout_marginBottom="164dp"
android:onClick="gotoFirstActivity"
android:text="開啟活動1"
app:layout_constraintBottom_toBottomOf="parent"