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我希望開發具有文本視圖和幾個buttons.I已經把4個按鈕上我的應用程序WhatsApp的2和2個facebook.I一個簡單的Android應用程序訪問的WhatsApp和FB希望，每當一個人點擊在whatsapp按鈕上，文本視圖中的文本被轉發給whatsapp用戶想要發送消息的用戶的聯繫人。類似地，我希望該用戶能夠將fb中的私人消息發送給他的朋友。消息將與textview中的文本相同。我MainActivity.java文件低於無法從其他Android應用
package com.example.shalabh.gratbites;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
public TextView textView;
public TextView textView2;
public Button button;
public Button button2;
public Button button3;
public Button button4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onClickListenerButton2()
{
textView=(TextView)findViewById(R.id.textView);
button2=(Button)findViewById(R.id.button2);
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String fb = textView.getText().toString();
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_TEXT, fb);
startActivity(Intent.createChooser(shareIntent,"Share gratitude"));
}
});
}
public void onClickListenerButton3()
{
textView2 = (TextView)findViewById(R.id.textView2);
button3= (Button)findViewById(R.id.button3);
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String whatsAppMessage = textView2.getText().toString();
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, whatsAppMessage);
sendIntent.setType("text/plain");
// Do not forget to add this to open whatsApp App specifically
sendIntent.setPackage("com.whatsapp");
startActivity(sendIntent);
}
});
}
public void onClickListenerButton()
{
textView= (TextView)findViewById(R.id.textView);
button= (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String whatsAppMessage = textView.getText().toString();
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, whatsAppMessage);
sendIntent.setType("text/plain");
// Do not forget to add this to open whatsApp App specifically
sendIntent.setPackage("com.whatsapp");
startActivity(sendIntent);
}
});
}
}
我main_activity.xml文件
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
android:background="#ffffff">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="At times our own light goes out and is rekindled by a spark from another person. Each of us has cause to think with deep gratitude of those who have lighted the flame within us. "
android:id="@+id/textView"
android:layout_alignParentTop="true"
android:layout_marginTop="38dp"
android:editable="false"
android:elegantTextHeight="false"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Whatsapp"
android:id="@+id/button"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="40dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button2"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignRight="@id/button"
android:layout_alignTop="@+id/button"
android:text="Facebook" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="I wanted to say thanks... and share my gratitude for everything I've been blessed with. Family, friends, and continued support from everyone."
android:id="@+id/textView2"
android:layout_below="@+id/button"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="74dp"
android:layout_alignRight="@+id/button2"
android:layout_alignEnd="@+id/button2" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="whatsapp"
android:id="@+id/button3"
android:layout_below="@+id/textView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="40dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Facebook"
android:id="@+id/button4"
android:layout_alignTop="@+id/button3"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
問題是，所有的按鈕都沒有反應。我無法理解的原因。善意幫助我找到解決我的問題，如果可能的話建議替代方法。
P.S.我還沒有完成button4的編碼