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POChaging textview from another activity
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  1. POChaging textview from another activity
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    copied!<p>I have two activities first one have two buttons second one have one textview</p> <p>what I need is when I click on the first button the second activity open and the textview show(hello) when I click on the second button the second activity open and the textview show(how are you)</p> <p>this is the first activity layout</p> <pre><code>&lt;ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/ScrollView1" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:scrollbars="none" tools:context=".DailyPrayersActivity" &gt; &lt;LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" &gt; &lt;Button android:id="@+id/btn1" style="@style/Button_Normal" android:background="@drawable/btn01" android:onClick="hello" android:text="@string/hello" /&gt; &lt;Button android:id="@+id/btn2" style="@style/Button_Normal" android:background="@drawable/btn01" android:onClick="hru" android:text="@string/hru" /&gt; &lt;/LinearLayout&gt; &lt;/ScrollView&gt; </code></pre> <p>this is the java class of the first activity</p> <pre><code>package com.daily.morning; public class FirstActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_1); } public void hello(View v) { Intent i1 = new Intent(firstActivity.this, SecondActivity.class); SecondActivity.textview.setText("Hello"); startActivity(i1); finish(); } public void hru(View v) { Intent i2 = new Intent(FirstActivity.this, SecondActivity.class); SecondActivity.textview.setText("good morning"); startActivity(i2); finish(); } } </code></pre> <p>when I click on the first button or the second button the application force close</p> <p>this is the logcat</p> <pre><code>&gt;&gt;09-06 14:26:24.054: E/AndroidRuntime(30993): FATAL EXCEPTION: main 09-06 14:26:24.054: E/AndroidRuntime(30993): java.lang.IllegalStateException: Could not execute method of the activity 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.view.View$1.onClick(View.java:3699) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.view.View.performClick(View.java:4223) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.view.View$PerformClick.run(View.java:17275) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.os.Handler.handleCallback(Handler.java:615) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.os.Handler.dispatchMessage(Handler.java:92) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.os.Looper.loop(Looper.java:137) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.app.ActivityThread.main(ActivityThread.java:4898) 09-06 14:26:24.054: E/AndroidRuntime(30993): at java.lang.reflect.Method.invokeNative(Native Method) 09-06 14:26:24.054: E/AndroidRuntime(30993): at java.lang.reflect.Method.invoke(Method.java:511) 09-06 14:26:24.054: E/AndroidRuntime(30993): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008) 09-06 14:26:24.054: E/AndroidRuntime(30993): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775) 09-06 14:26:24.054: E/AndroidRuntime(30993): at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:103) 09-06 14:26:24.054: E/AndroidRuntime(30993): at dalvik.system.NativeStart.main(Native Method) 09-06 14:26:24.054: E/AndroidRuntime(30993): Caused by: java.lang.reflect.InvocationTargetException 09-06 14:26:24.054: E/AndroidRuntime(30993): at java.lang.reflect.Method.invokeNative(Native Method) 09-06 14:26:24.054: E/AndroidRuntime(30993): at java.lang.reflect.Method.invoke(Method.java:511) 09-06 14:26:24.054: E/AndroidRuntime(30993): at android.view.View$1.onClick(View.java:3694) 09-06 14:26:24.054: E/AndroidRuntime(30993): ... 12 more 09-06 14:26:24.054: E/AndroidRuntime(30993): Caused by: java.lang.NullPointerException 09-06 14:26:24.054: E/AndroidRuntime(30993): at com.daily.morning.FirstActivity.hello(FirstActivity.java:38) 09-06 14:26:24.054: E/AndroidRuntime(30993): ... 15 more </code></pre>
 

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