多個Activity中傳遞簡單引數
阿新 • • 發佈:2018-12-30
佈局檔案:
actiity_main:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/btnStartAty" android:text="啟動另一個Activity"/> </RelativeLayout>
activity_the_aty:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".TheAty"> <TextView android:id="@+id/theAty" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </RelativeLayout>
TheAty:
import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.TextView; public class TheAty extends AppCompatActivity { private TextView tv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_the_aty); Intent i = getIntent(); Bundle data = i.getExtras(); tv = (TextView) findViewById(R.id.theAty); // tv.setText(i.getStringExtra("data")); tv.setText(data.getString("name")); } }
MainActivity:
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.btnStartAty).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this, TheAty.class);
// i.putExtra("data", "Hello World");
Bundle b = new Bundle();
b.putString("name", "Bundle");
i.putExtras(b);
startActivity(i);
}
});
}
}