jj97181818/Ch08_MultiActivity
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Get tvPath.Text and put in intent

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This commit is contained in:
Pin Lin
2018-12-13 10:13:49 +08:00
parent 0ee0691bc1
commit 3dbfba2344
3 changed files with 18 additions and 3 deletions
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7
app/src/main/java/me/jj97181818/ch08_multiactivity/MainActivity.java
View File

@ -4,13 +4,17 @@ import android.content.Intent;
import android.support.v7.app.AppCompatActivity; import android.support.v7.app.AppCompatActivity;
import android.os.Bundle; import android.os.Bundle;
import android.view.View; import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity { public class MainActivity extends AppCompatActivity {
TextView tvPath;
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); setContentView(R.layout.activity_main);
tvPath = findViewById(R.id.tv_path1);
} }
public void goBack (View v) { public void goBack (View v) {
@ -19,7 +23,8 @@ public class MainActivity extends AppCompatActivity {
public void gotoSecondActivity(View v) { public void gotoSecondActivity(View v) {
Intent it = new Intent(this, SecondActivity.class); Intent it = new Intent(this, SecondActivity.class);
startActivity(it); it.putExtra("path", tvPath.getText());
startActivityForResult(it, 1);
} }
} }

7
app/src/main/java/me/jj97181818/ch08_multiactivity/SecondActivity.java
View File

@ -4,13 +4,17 @@ import android.content.Intent;
import android.support.v7.app.AppCompatActivity; import android.support.v7.app.AppCompatActivity;
import android.os.Bundle; import android.os.Bundle;
import android.view.View; import android.view.View;
import android.widget.TextView;
public class SecondActivity extends AppCompatActivity { public class SecondActivity extends AppCompatActivity {
TextView tvPath;
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second); setContentView(R.layout.activity_second);
tvPath = findViewById(R.id.tv_path2);
} }
public void goBack (View v) { public void goBack (View v) {
@ -19,6 +23,7 @@ public class SecondActivity extends AppCompatActivity {
public void gotoThirdActivity(View v) { public void gotoThirdActivity(View v) {
Intent it = new Intent(this, ThirdActivity.class); Intent it = new Intent(this, ThirdActivity.class);
startActivity(it); it.putExtra("path", tvPath.getText());
startActivityForResult(it, 2);
} }
} }

7
app/src/main/java/me/jj97181818/ch08_multiactivity/ThirdActivity.java
View File

@ -4,13 +4,17 @@ import android.content.Intent;
import android.support.v7.app.AppCompatActivity; import android.support.v7.app.AppCompatActivity;
import android.os.Bundle; import android.os.Bundle;
import android.view.View; import android.view.View;
import android.widget.TextView;
public class ThirdActivity extends AppCompatActivity { public class ThirdActivity extends AppCompatActivity {
TextView tvPath;
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
setContentView(R.layout.activity_third); setContentView(R.layout.activity_third);
tvPath = findViewById(R.id.tv_path3);
} }
public void goBack (View v) { public void goBack (View v) {
@ -19,6 +23,7 @@ public class ThirdActivity extends AppCompatActivity {
public void gotoFirstActivity(View v) { public void gotoFirstActivity(View v) {
Intent it = new Intent(this, MainActivity.class); Intent it = new Intent(this, MainActivity.class);
startActivity(it); it.putExtra("path", tvPath.getText());
startActivityForResult(it, 3);
} }
} }